(c + a = 800)5
5c + 16a = 8400
5c + 5a = 4000
Subtract
11a = 4400
a = 400
There were 400 children and 400 adults
First, you have to make the denominators the same.
5 1/3 is now 5 4/12
4 3/4 is now 4 9/12
5 4/12
- 4 9/12
4 16/12
- 4 9/12
7/12
Hope this helps!
the first one y= 4x (8 - x)
Answer: <em>1415.52 i think :)</em>
